.TH std::iter_move(std::reverse_iterator) 3 "2024.06.10" "http://cppreference.com" "C++ Standard Libary"
.SH NAME
std::iter_move(std::reverse_iterator) \- std::iter_move(std::reverse_iterator)

.SH Synopsis
   friend constexpr std::iter_rvalue_reference_t<Iter>
       iter_move( const std::reverse_iterator& i ) noexcept(/* see below  \fI(since C++20)\fP
   */);

   Casts the result of dereferencing the adjusted underlying iterator to its associated
   rvalue reference type.

   The function body is equivalent to:

 auto tmp = i.base();
 return std::ranges::iter_move(--tmp);

   This function template is not visible to ordinary unqualified or qualified lookup,
   and can only be found by argument-dependent lookup when std::reverse_iterator<Iter>
   is an associated class of the arguments.

.SH Parameters

   i - a source reverse iterator

.SH Return value

   An rvalue reference or a prvalue temporary.

.SH Complexity

   Constant.

.SH Exceptions

   noexcept specification:
   noexcept(

       std::is_nothrow_copy_constructible_v<Iter> &&
       noexcept(std::ranges::iter_move(--std::declval<Iter&>()))

   )

.SH Example


// Run this code

 #include <iomanip>
 #include <iostream>
 #include <iterator>
 #include <string>
 #include <vector>

 void print(auto const& rem, auto const& v)
 {
     std::cout << rem << '[' << size(v) << "] {";
     for (char comma[]{0, 0}; auto const& s : v)
         std::cout << comma << ' ' << std::quoted(s), comma[0] = ',';
     std::cout << " }\\n";
 }

 int main()
 {
     std::vector<std::string> p{"Alpha", "Bravo", "Charlie"}, q;

     print("p", p), print("q", q);

     using RI = std::reverse_iterator<std::vector<std::string>::iterator>;

     for (RI iter{p.rbegin()}, rend{p.rend()}; iter != rend; ++iter)
         q.emplace_back(/* ADL */ iter_move(iter));

     print("p", p), print("q", q);
 }

.SH Possible output:

 p[3] { "Alpha", "Bravo", "Charlie" }
 q[0] { }
 p[3] { "", "", "" }
 q[3] { "Charlie", "Bravo", "Alpha" }

.SH See also

   iter_move             casts the result of dereferencing an object to its associated
   (C++20)               rvalue reference type
                         (customization point object)
   iter_move             casts the result of dereferencing the underlying iterator to
   (C++20)               its associated rvalue reference type
                         \fI(function)\fP
   move                  obtains an rvalue reference
   \fI(C++11)\fP               \fI(function template)\fP
   move_if_noexcept      obtains an rvalue reference if the move constructor does not
   \fI(C++11)\fP               throw
                         \fI(function template)\fP
   forward               forwards a function argument
   \fI(C++11)\fP               \fI(function template)\fP
   ranges::move          moves a range of elements to a new location
   (C++20)               (niebloid)
   ranges::move_backward moves a range of elements to a new location in backwards order
   (C++20)               (niebloid)

.SH Category:
     * conditionally noexcept
